Automatic pressure-governor.



I. P. GORDON.

AUTOMATIC PRESSURE GOVERNOR.

APPLICATION FILED FEB. 10, 1912.

1 ,046, 1 76. Patented Dec. 3, 1912.

3 SHEETSSHEET 1.

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COLUMBIA PLANOGRAFH C0,, WASHINGTON, D. c.

I. F. GORDON.

AUTOMATIC PRESSURE GOVERNOR.

APPLICATION FILED I'EB. 10, 1912.

Patented Dec. 3, 1912.

3 SHEETS-SHEET 2.

R '1 u- 1au 5 1? y 3* V I n WITNESSES: IIVl/E/VTOI? Ir aCF'. Gronlon,

ATTORNEYJ' COLUMBIA PLANOGRAPH 60., WASHINGTON. D. c.

I. P. GORDON.

AUTOMATIC PRESSURE GOVERNOR;

AIILIOATION FILED M310, 1912.

1,046,176. v r v Patented Dea3,1912."

3 SHEETS-SHEET 3.

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WITNESSES: IIVVENTOR m 5 I1: aJE'. Gcoraom,

A TTORNEYS COLUMBIA FLANOGRAPH C0.,wAsl-||Nu'ruN. D. c I

barren s ra rns r gnn r crates.

IRA 1E. GORDON, OF GRAND RAPIDS, MICHIGAN.

AUTOMATIC PRESSURE-GOVERNOR.

release.

Application filed February 10, 1912.

To all whom, it may concern:

Be it known that I, Tim F. GORDON, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented new and useful Improvements in Automatic Pressure Governors,of which the following isaspecification.

My invention relates to automatic pressure governors, 2'. 6. devices for automatically discontinuing the operation of a machine, as a pump, when the pressure eX- ceeds a predetermined limit without interrupting the driving power, and for resuming such operation when the pressure falls below such limit; and the object of my" invention is to provide an improved device of that character which shall be very simple and effective and by which the operation of the machine below such predetermined pressure shall be positive and unvarying. This,

and other objects appearing hereinafter, are

such pump, illustrating the pressure governor; Fig. t is a like View of the same parts showing the pressure governor in another position; and Figs. 5 and 6 show modified constructions.

The two pump cylinders l, 2, of a double pump, respectively having pistons 3, 4, are alternately operated by a lever 5 rocked, as by the connecting rod 6 (shown broken off), to which the power is applied. The operative connections, including the cut-out, between this lever and each of the pistons, comprise a lever 7 (having duplicate halves as shown) pivoted at 8 to the piston and pivotally connected at 9 to a link 10 (having duplicate halves as shown) which is pivoted at 11 to the lever 5.

In the normal operative position of the machine (shown in Fig. 1), the lever 5 abuttingly engages the lever 7, and thus to the full capacity of the machine drives the pump. This abutting engagement may be variously efiected; in the construction shown, a lug on the lever 5, (being an extension of the pivot pin 11) thus engages the Specification of Letters Patent.

Fatented Dec. 3, 1912.

Serial No. 676,768.

lower side 12 of a recess in the lever 7, such side and the pivot pin forming the abutting members. The three pivots, 8, 9 and 11, are not alined, the middle pivot 9 being out of line in that direction in which the abutting member 12 moves when a predetermined pressure is exceeded, as hereinafter explained. A suitable spring 13 whose tension may be adjusted as by a nut 14:, presses the abutting members in their engagement, which spring may be attached at one end to the lever 5 and at the other to the lever 7. The lever 5 thus constitutes the driving member in the construction shown, and the piston 3, l, the driven member.

It will be seen that the operation of the machine is such that until the pressure for which the tension of the spring is adjusted, has been exceeded, the abutting members are in engagement and the pump is operated to the fullcapacity of the machine, the spring not yielding,all as shown in Fig. 1; but when the pressure thus predetermined is exceeded, the pivots not being alined, the abutting members are permitted by the yielding of the spring to separate, as shown on the right-hand side of Fig. 3, whereby the stroke of the pump continually shortens with the continual increase of such pressure, until, as shown in Fig. l, the pistons are arrested by a suitable stop 17, when the pump entirely ceases to operate, and the power continuing, the mechanism idly turns on the three pivots; as the pressure decreases, the pump stroke lengthens until, the pressure being reduced below such predetermined limit, the spring again presses the abutting members into their engagement: also that during such abutting engagement. the operation of the pump is positive and not subject to any slight yielding of the spring, as it would be in a machine not provided with such engaging means, and that any slight and temporary excess of pressure above such predetermined limit will, by reason of its short duration, not disengage the abutting members. The pump shown has a pressure gage 15 and air-chamber 16.

In the modified construction shown in Fig. 5, one end of the spring is attached to one lever 7 and the other end to the other lever 7. Inasmuch as the load is greatest at the beginning of the driving stroke, it is desirable that the tension of the spring should then be highest. It will be seen that when one piston 4 is at its highest point to the lever 7 and the other to a stationary part, as the eye 18. My pressure governor may manifestly be applied to other machines.

Not confining myself to the details of construction shown and described, I claim: 1. In a device of the character described, a driving member, a driven member, a lever pivoted to one and adapted to abuttingly engage the other to drive the driven member, a link pivoted to the member thus engaged and pivoted tothe lever, such three pivots not being alined, and a spring adapted to press said abutting parts in their abutting engagement.

2. In a device of the character described, a lever member, a piston member, one member being the driving and the other the driven part, a second lever pivoted to one and adapted to operatively and abuttingly engage the other said member, a link pivoted to the second lever and to the said member thus engaged, such three pivots not being alined, and a spring adapted to press said abutting parts in their abutting engagement.

3. In a device of the character described, a driving member, a driven member, alever pivoted to one and adapted to abuttingly engage the other to drive the driven member, a link pivoted to the member thus engaged and pivoted to the lever, such three pivots not being alined, a stop to limit the movement of the driven member, and a spring adapted to press said abutting parts 1n their abuttmg engagement.

4. In a device of the character described, a driving member, alternately driven members, for each driven member and the driving member a lever pivoted to one and adapted to abuttingly engage the other to drive its driven member, links pivoted one to each member thus engaged and to the lever, such pivots in'the driving parts of each driven member not being alined, and a spring adapted to press all said abutting parts in their abutting position and attached at each end to said levers in such position that the tension of said spring is highest at the beginning of each driving stroke of the driving member.

5. In a device of the character described, a driving member, a driven member, a lever pivoted to one and adapted to abuttingly engage the other to drive the driven member,a link pivoted to the member thus engaged and pivoted to the lever, such three pivots not being alined, and a spring adapted to press said abutting parts in their abuttin en a ement and attached at one end g a c 7 to the lever and at the other in such position that the tension of the spring is highest at the beginning of each driving stroke of the driving member. 7 7' In testimony whereof I have hereunto set my hand 1n presence of two subscribing witnesses.

. IRA F. GORDON. WVitnesses:

MARYSOHULTE, CYRUS W. Bron.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

